static class RemoteDB {
  DialogIO db;
  
  *(S botName) {
    db = findBot(botName);
  }
  
  L<PassRef> xlist(S className) {
    ret (L<PassRef>) rpc(db, "xlist", className);
  }
  
  S xclass(PassRef o) {
    ret (S) rpc(db, "xclass", o);
  }
  
  O xget(PassRef o, S field) {
    ret rpc(db, "xget", o, field);
  }
  
  S xS(PassRef o, S field) {
    ret (S) xget(o, field);
  }
  
  PassRef xgetref(PassRef o, S field) {
    ret (PassRef) xget(o, field);
  }
  
  void xset(PassRef o, S field, O value) {
    rpc(db, "xset", o, field, value);
  }
  
  PassRef unary(S className) {
    PassRef ref = first(xlist(className));
    if (ref == null)
      ref = xnew(className);
    ret ref;
  }
  
  PassRef xnew(S className, O... values) {
    ret (PassRef) rpc(db, "xnew", className, values);
  }
  
  void xdelete(PassRef o) {
    rpc(db, "xdelete", o);
  }

  void close() {
    if (db != null)
      db.close();
  }
}